The Tor Browser / file comparison
comparison: mobile/android/base/widget/ArrowPopup.java
mobile/android/base/widget/ArrowPopup.java
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| 1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 package org.mozilla.gecko.widget; | |
| 7 | |
| 8 import org.mozilla.gecko.GeckoApp; | |
| 9 import org.mozilla.gecko.R; | |
| 10 import org.mozilla.gecko.util.HardwareUtils; | |
| 11 | |
| 12 import android.content.res.Resources; | |
| 13 import android.graphics.drawable.BitmapDrawable; | |
| 14 import android.os.Build; | |
| 15 import android.view.Gravity; | |
| 16 import android.view.LayoutInflater; | |
| 17 import android.view.View; | |
| 18 import android.view.ViewGroup; | |
| 19 import android.widget.ImageView; | |
| 20 import android.widget.LinearLayout; | |
| 21 import android.widget.PopupWindow; | |
| 22 import android.widget.RelativeLayout; | |
| 23 | |
| 24 public class ArrowPopup extends PopupWindow { | |
| 25 protected final GeckoApp mActivity; | |
| 26 | |
| 27 private View mAnchor; | |
| 28 private ImageView mArrow; | |
| 29 | |
| 30 private int mArrowWidth; | |
| 31 private int mYOffset; | |
| 32 | |
| 33 protected LinearLayout mContent; | |
| 34 protected boolean mInflated; | |
| 35 | |
| 36 public ArrowPopup(GeckoApp aActivity) { | |
| 37 this(aActivity, null); | |
| 38 } | |
| 39 | |
| 40 public ArrowPopup(GeckoApp activity, View anchor) { | |
| 41 super(activity); | |
| 42 mActivity = activity; | |
| 43 mAnchor = anchor; | |
| 44 | |
| 45 mInflated = false; | |
| 46 | |
| 47 final Resources res = activity.getResources(); | |
| 48 mArrowWidth = res.getDimensionPixelSize(R.dimen.menu_popup_arrow_width); | |
| 49 mYOffset = res.getDimensionPixelSize(R.dimen.menu_popup_arrow_offset); | |
| 50 | |
| 51 setAnimationStyle(R.style.PopupAnimation); | |
| 52 } | |
| 53 | |
| 54 public void setAnchor(View anchor) { | |
| 55 mAnchor = anchor; | |
| 56 } | |
| 57 | |
| 58 protected void init() { | |
| 59 setBackgroundDrawable(new BitmapDrawable()); | |
| 60 setOutsideTouchable(true); | |
| 61 | |
| 62 setWindowLayoutMode(HardwareUtils.isTablet() ? ViewGroup.LayoutParams.WRAP_CONTENT : ViewGroup.LayoutParams.FILL_PARENT, | |
| 63 ViewGroup.LayoutParams.WRAP_CONTENT); | |
| 64 | |
| 65 LayoutInflater inflater = LayoutInflater.from(mActivity); | |
| 66 RelativeLayout layout = (RelativeLayout) inflater.inflate(R.layout.arrow_popup, null); | |
| 67 setContentView(layout); | |
| 68 | |
| 69 mArrow = (ImageView) layout.findViewById(R.id.arrow); | |
| 70 mContent = (LinearLayout) layout.findViewById(R.id.content); | |
| 71 | |
| 72 mInflated = true; | |
| 73 } | |
| 74 | |
| 75 /* | |
| 76 * Shows the popup with the arrow pointing to the center of the anchor view. If an anchor hasn't | |
| 77 * been set or isn't visible, the popup will just be shown at the top of the gecko app view. | |
| 78 */ | |
| 79 public void show() { | |
| 80 int[] anchorLocation = new int[2]; | |
| 81 if (mAnchor != null) | |
| 82 mAnchor.getLocationInWindow(anchorLocation); | |
| 83 | |
| 84 // If there's no anchor or the anchor is out of the window bounds, | |
| 85 // just show the popup at the top of the gecko app view. | |
| 86 if (mAnchor == null || anchorLocation[1] < 0) { | |
| 87 final View view = mActivity.getView(); | |
| 88 | |
| 89 // Bug in android code causes the window layout parameters to be ignored | |
| 90 // when using showAtLocation() in Gingerbread phones. | |
| 91 if (Build.VERSION.SDK_INT < 11) { | |
| 92 setWidth(view.getWidth()); | |
| 93 setHeight(view.getHeight()); | |
| 94 } | |
| 95 | |
| 96 showAtLocation(view, Gravity.TOP, 0, 0); | |
| 97 return; | |
| 98 } | |
| 99 | |
| 100 // Remove padding from the width of the anchor when calculating the arrow offset. | |
| 101 int anchorWidth = mAnchor.getWidth() - mAnchor.getPaddingLeft() - mAnchor.getPaddingRight(); | |
| 102 // This is the difference between the edge of the anchor view and the edge of the arrow view. | |
| 103 // We're making an assumption here that the anchor view is wider than the arrow view. | |
| 104 int arrowOffset = (anchorWidth - mArrowWidth)/2 + mAnchor.getPaddingLeft(); | |
| 105 | |
| 106 // The horizontal offset of the popup window, relative to the left side of the anchor view. | |
| 107 int offset = 0; | |
| 108 | |
| 109 RelativeLayout.LayoutParams arrowLayoutParams = (RelativeLayout.LayoutParams) mArrow.getLayoutParams(); | |
| 110 | |
| 111 if (HardwareUtils.isTablet()) { | |
| 112 // On tablets, the popup has a fixed width, so we use a horizontal offset to position it. | |
| 113 // The arrow's left margin is set by the arrow_popup.xml layout file. | |
| 114 // This assumes that anchor is not too close to the right side of the screen. | |
| 115 offset = arrowOffset - arrowLayoutParams.leftMargin; | |
| 116 } else { | |
| 117 // On phones, the popup takes up the width of the screen, so we set the arrow's left | |
| 118 // margin to make it line up with the anchor. | |
| 119 int leftMargin = anchorLocation[0] + arrowOffset; | |
| 120 arrowLayoutParams.setMargins(leftMargin, 0, 0, 0); | |
| 121 } | |
| 122 | |
| 123 if (isShowing()) { | |
| 124 update(mAnchor, offset, -mYOffset, -1, -1); | |
| 125 } else { | |
| 126 showAsDropDown(mAnchor, offset, -mYOffset); | |
| 127 } | |
| 128 } | |
| 129 } |
